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drm: bridge: dw-hdmi: Pass private data pointer to .mode_valid()
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Platform glue drivers for dw_hdmi may need to access device-specific
data from their .mode_valid() implementation. They currently have no
clean way to do so, and one driver hacks around it by accessing the
dev_private data of the drm_device retrieved from the connector.

Add a priv_data void pointer to the dw_hdmi_plat_data structure, and
pass it to the .mode_valid() function.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200526011505.31884-12-laurent.pinchart+renesas@ideasonboard.com
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Laurent Pinchart authored and Sam Ravnborg committed Jun 23, 2020
1 parent 12c683e commit 96591a4
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Showing 8 changed files with 32 additions and 12 deletions.
6 changes: 4 additions & 2 deletions drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
Original file line number Diff line number Diff line change
Expand Up @@ -2771,15 +2771,17 @@ dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_mode *mode)
{
struct dw_hdmi *hdmi = bridge->driver_private;
const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
struct drm_connector *connector = &hdmi->connector;
enum drm_mode_status mode_status = MODE_OK;

/* We don't support double-clocked modes */
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
return MODE_BAD;

if (hdmi->plat_data->mode_valid)
mode_status = hdmi->plat_data->mode_valid(connector, mode);
if (pdata->mode_valid)
mode_status = pdata->mode_valid(hdmi, pdata->priv_data,
connector, mode);

return mode_status;
}
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6 changes: 4 additions & 2 deletions drivers/gpu/drm/imx/dw_hdmi-imx.c
Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,8 @@ static const struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs =
};

static enum drm_mode_status
imx6q_hdmi_mode_valid(struct drm_connector *con,
imx6q_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
struct drm_connector *con,
const struct drm_display_mode *mode)
{
if (mode->clock < 13500)
Expand All @@ -158,7 +159,8 @@ imx6q_hdmi_mode_valid(struct drm_connector *con,
}

static enum drm_mode_status
imx6dl_hdmi_mode_valid(struct drm_connector *con,
imx6dl_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
struct drm_connector *con,
const struct drm_display_mode *mode)
{
if (mode->clock < 13500)
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3 changes: 2 additions & 1 deletion drivers/gpu/drm/meson/meson_dw_hdmi.c
Original file line number Diff line number Diff line change
Expand Up @@ -630,7 +630,8 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
}

static enum drm_mode_status
dw_hdmi_mode_valid(struct drm_connector *connector,
dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode)
{
struct meson_drm *priv = connector->dev->dev_private;
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3 changes: 2 additions & 1 deletion drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,8 @@ static const struct rcar_hdmi_phy_params rcar_hdmi_phy_params[] = {
};

static enum drm_mode_status
rcar_hdmi_mode_valid(struct drm_connector *connector,
rcar_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode)
{
/*
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3 changes: 2 additions & 1 deletion drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
Original file line number Diff line number Diff line change
Expand Up @@ -220,7 +220,8 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
}

static enum drm_mode_status
dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
dw_hdmi_rockchip_mode_valid(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode)
{
const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
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6 changes: 4 additions & 2 deletions drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,8 @@ sun8i_dw_hdmi_encoder_helper_funcs = {
};

static enum drm_mode_status
sun8i_dw_hdmi_mode_valid_a83t(struct drm_connector *connector,
sun8i_dw_hdmi_mode_valid_a83t(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode)
{
if (mode->clock > 297000)
Expand All @@ -41,7 +42,8 @@ sun8i_dw_hdmi_mode_valid_a83t(struct drm_connector *connector,
}

static enum drm_mode_status
sun8i_dw_hdmi_mode_valid_h6(struct drm_connector *connector,
sun8i_dw_hdmi_mode_valid_h6(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode)
{
/*
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3 changes: 2 additions & 1 deletion drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h
Original file line number Diff line number Diff line change
Expand Up @@ -176,7 +176,8 @@ struct sun8i_hdmi_phy {
};

struct sun8i_dw_hdmi_quirks {
enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
enum drm_mode_status (*mode_valid)(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode);
unsigned int set_rate : 1;
unsigned int use_drm_infoframe : 1;
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14 changes: 12 additions & 2 deletions include/drm/bridge/dw_hdmi.h
Original file line number Diff line number Diff line change
Expand Up @@ -124,13 +124,23 @@ struct dw_hdmi_phy_ops {

struct dw_hdmi_plat_data {
struct regmap *regm;
enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
const struct drm_display_mode *mode);

unsigned long input_bus_format;
unsigned long input_bus_encoding;
bool use_drm_infoframe;
bool ycbcr_420_allowed;

/*
* Private data passed to all the .mode_valid() and .configure_phy()
* callback functions.
*/
void *priv_data;

/* Platform-specific mode validation (optional). */
enum drm_mode_status (*mode_valid)(struct dw_hdmi *hdmi, void *data,
struct drm_connector *connector,
const struct drm_display_mode *mode);

/* Vendor PHY support */
const struct dw_hdmi_phy_ops *phy_ops;
const char *phy_name;
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